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Gluten-Free Leek and Mushroom Quiche Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.6 from 51 reviews
  • Author: Stacy
  • Prep Time: 25 minutes
  • Cook Time: 45 minutes
  • Total Time: 1 hour 10 minutes
  • Yield: 8 servings (one 9-inch quiche) 1x
  • Category: Main Dish
  • Method: Baking
  • Cuisine: American
  • Diet: Gluten Free

Description

This Gluten-Free Quiche with Leeks & Mushrooms is a delicious dairy-free and savory pie that’s perfect for breakfast, brunch, or a light dinner. Featuring a crispy gluten-free crust filled with sautéed leeks, cremini mushrooms, fresh spinach, and a rich egg custard, this recipe combines wholesome ingredients to create a flavorful and satisfying meal suitable for those avoiding gluten and dairy.


Ingredients

Scale

Pie Crust

  • 1 batch gluten-free pie crust (or a 9-inch or 23 cm store-bought crust)
  • 1/4 cup dairy-free butter (we recommend Miyoko’s)

Filling

  • 1 large leek, cut in half, washed well, and sliced (approximately 34 cups loosely packed or 270365 g)
  • 2 cups sliced cremini mushrooms (baby bella, about 6 oz.)
  • 1 ½ tsp fresh thyme, stems removed
  • 1 tsp sea salt, divided
  • 1 tsp black pepper, divided
  • 3 cups loosely packed fresh baby spinach
  • 7 large eggs (organic, pasture-raised when possible)
  • 2/3 cup plain unsweetened dairy-free milk (preferably thicker milks like cashew milk)

Optional for Serving

  • 1/3 cup shredded dairy-free cheese (cheddar-style recommended)

Instructions

  1. Preheat and prepare crust: Preheat oven to 375°F (190°C) and prepare a 9-inch pie pan. If making homemade crust, prepare it now. Par-bake the gluten-free crust for 20 minutes to ensure a sturdy base.
  2. Adjust oven temperature: After par-baking, reduce oven temperature to 350°F (176°C) and place the crust on a baking sheet to catch any spills during baking.
  3. Sauté vegetables: Melt dairy-free butter in a large skillet over medium heat. Add leeks, mushrooms, thyme, and half of the salt and pepper (1/2 tsp each). Cook over medium-low heat for 8-10 minutes until leeks are soft, mushrooms are tender, and moisture has evaporated. Add spinach and wilt, then remove skillet from heat.
  4. Prepare egg mixture: In a medium bowl, whisk together the eggs, dairy-free milk, and remaining salt and pepper (1/2 tsp each) until fully combined.
  5. Assemble the quiche: Spread the sautéed vegetables evenly over the par-baked crust. Pour the egg mixture on top, covering the vegetables. If desired, sprinkle shredded dairy-free cheese evenly over the top.
  6. Bake the quiche: Bake for 45-50 minutes at 350°F (176°C) until the center barely jiggles and the custard is set.
  7. Cool and serve: Allow the quiche to cool for 20 minutes before slicing. Serve warm or cold. Store leftovers in the refrigerator for up to 3 days.

Notes

  • Nutrition information is a rough estimate and calculated without optional cheese.
  • Use a thicker dairy-free milk like cashew milk for a creamier texture.
  • Par-baking the crust prevents sogginess and ensures a crisp base.
  • The quiche is suitable for gluten-free and dairy-free diets.
  • Store leftovers in an airtight container in the refrigerator for up to 3 days.

Nutrition

  • Serving Size: 1 slice (1/8 quiche)
  • Calories: 210
  • Sugar: 2g
  • Sodium: 280mg
  • Fat: 14g
  • Saturated Fat: 3g
  • Unsaturated Fat: 9g
  • Trans Fat: 0g
  • Carbohydrates: 14g
  • Fiber: 2g
  • Protein: 9g
  • Cholesterol: 185mg